| John Duff |
| Born | ca 1800 |
| Death | |
| Father | |
| Mother | |
| Spouse 1 | Janet Harley |
| Spouse 2 | |
| Spouse 3 | |
| Child 1 | John |
| Child 2 | |
| Child 3 | |
| Child 4 | |
| Child 5 | |
| Child 6 | |
| Sibling 1 | |
| Sibling 2 | |
| Sibling 3 | |
| Sibling 4 | |
| Sibling 5 | |
| Sibling 6 | |
| NOTES : | |
| John Duff |
| Born | ca 1800 |
| Death | |
| Father | |
| Mother | |
| Spouse 1 | Janet Harley |
| Spouse 2 | |
| Spouse 3 | |
| Child 1 | John |
| Child 2 | |
| Child 3 | |
| Child 4 | |
| Child 5 | |
| Child 6 | |
| Sibling 1 | |
| Sibling 2 | |
| Sibling 3 | |
| Sibling 4 | |
| Sibling 5 | |
| Sibling 6 | |
| NOTES : | |